Three-phase copper bar seat and vehicle

Abstract

The invention relates to a three-phase copper bar seat and a vehicle, the three-phase copper bar seat comprises three copper bars, the three-phase copper bar seat comprises a mounting seat, a cylinder penetrating part, an extension part and a sealing structure, the extension part is arranged at one end of the cylinder penetrating part, the mounting seat sleeves the cylinder penetrating part and is connected with the extension part, and the sealing structure is arranged between the mounting seat and the extension part; three channels are formed in the cylinder penetrating part, the three channels are arranged in the same row and do not interfere with one another, one ends of the three copper bars are inserted and fixed into the three channels, and the other ends of the three copper bars extend out of the extending part. According to the three-phase copper bar seat, the three copper bars are vertically fixed in the cylinder penetrating part in a parallel mode, the three-phase copper bar seat is sealed and isolated at the cylinder penetrating position, the sealing structure is arranged by a circle along the cylinder penetrating part, and due to the fact that the three copper bars are arranged in parallel, the contour perimeter of the cylinder penetrating part can be reduced, the sealing perimeter can be reduced, and the occupied space of the three-phase copper bar seat is reduced; and advantages are provided for efficient integration.

Description

Technical Field

[0001] The invention relates to the technical field of motor control, in particular to a three-phase copper busbar and a vehicle. Background Art

[0002] The three-phase copper busbar seat is an important electrical component, mainly involving the technical field of electric vehicles, especially in the electric drive integrated system. The three-phase copper busbar seat includes a three-phase copper busbar and a base integrally formed with the three-phase copper busbar body. It has high overall strength, ensures the sealing performance between the two, and improves space utilization. In addition, the application of the three-phase copper busbar seat also reflects its role in improving the performance and reliability of the electrical system, especially in the field of electric vehicles that require high current transmission and stable performance. The application of the three-phase copper busbar seat is particularly important.

[0003] The existing three-phase copper busbar seats are installed in a flat parallel structure. During installation, they are fixed to the three-phase copper busbars respectively using riveted blind hole nuts to reduce the risk of metal debris generated during the assembly process. However, the arrangement of the three-phase copper busbar seats occupies a large area, and in order to avoid contamination, it is necessary to seal along the circumference of the opening of the three-phase copper busbar, and the required sealing ring is large, which further increases the required space. Summary of the invention

[0004] In order to solve the technical problem that the sealing structure required for the installation of the above-mentioned three-phase copper busbar seat is relatively large, the present invention provides a three-phase copper busbar seat.

[0005] To achieve the above-mentioned purpose, the present invention provides a three-phase copper busbar seat, a mounting seat, a cylinder-penetrating portion, an extension portion and a sealing structure, wherein the extension portion is arranged at one end of the cylinder-penetrating portion, the mounting seat is sleeved on the cylinder-penetrating portion and is connected to the extension portion, and a sealing structure is arranged between the mounting seat and the extension portion; three channels are opened inside the cylinder-penetrating portion, the three channels are arranged in the same row, and the three channels do not interfere with each other, one end of the three copper buses are inserted into and fixed in the three channels, and the other end of the three copper buses extends out from the extension portion.

[0006] Furthermore, the three copper bars each include a motor lap end and an IGBT lap end, the motor lap end extends in a vertical direction, and the three IGBT lap ends extend out of the extension portion and extend in different directions.

[0007] Furthermore, the three-phase copper busbar seat also includes a bolt structure, and there are three bolt structures. The three bolt structures fix the motor lap end and the cylinder-penetrating part, and the three bolt structures have different installation heights and do not contact each other.

[0008] Furthermore, the three motor lap ends have different lengths in the vertical direction, and different numbers of mounting holes are provided on the three motor lap ends. The positions of the mounting holes on different motor lap ends correspond to each other, and on each motor lap end, the mounting hole at the lowest end has a smaller aperture.

[0009] Furthermore, a plurality of insulating plates are arranged on the inner wall of the cylinder penetration portion in a horizontal direction, and the insulating plates are abutted against the bottom ends of the motor overlap ends of different lengths.

[0010] Furthermore, the cylinder penetration portion opens three through holes of different heights along the vertical direction, the bolt structure extends into the through holes, the apertures of the three through holes are inconsistent, and the aperture of the through hole at the lowest height in the vertical direction is smaller than the apertures of the two through holes at higher heights.

[0011] Furthermore, one end of the three IGBT overlapping ends is provided with a bending structure, the bending structure extends in a horizontal or vertical direction, and the middle parts of the three bending structures are provided with through holes.

[0012] Furthermore, three isolation sleeves are arranged on the upper part of the extension portion, the outer walls of the three IGBT overlapping ends extend into the three isolation sleeves respectively, and each isolation sleeve is connected to one of the channels.

[0013] Furthermore, a circle of sealing grooves are arranged on the end faces of the mounting seat and the extension part, the notches of the sealing grooves of the mounting seat and the extension part are connected, and the sealing structure is arranged in the sealing grooves.

[0014] Another object of this embodiment is to provide a vehicle, which is provided with the above-mentioned three-phase copper busbar.

[0015] The above technical solution of the present invention has the following advantages compared with the prior art:

[0016] (1) The three-phase copper bar holder vertically fixes three copper bars in parallel in the cylinder penetration part. The three-phase copper bar holder is sealed and isolated at the cylinder penetration position. The sealing structure is arranged around the cylinder penetration part. Since the three copper bars are arranged in parallel, the contour circumference of the cylinder penetration part can be reduced, the sealing circumference can be reduced, and the space occupied by the three-phase copper bar holder can be reduced, which provides advantages for efficient integration;

[0017] (2) The three through holes in the three-phase copper bar seat are independent of each other and do not interfere with each other, and three isolation sleeves are arranged on the upper part of the extension part. Each copper bar has a corresponding through hole and isolation sleeve to achieve isolation between the copper bars. In addition, the overlapping ends of the three-phase copper bar motor are arranged at different heights in the vertical direction. The three-phase copper bar seat is provided with through holes of different heights in the cylinder penetration part, and an insulating plate is arranged at the bottom of the through hole. The bottom of the motor overlapping end is pressed against the position of the insulating plate, thereby achieving avoidance between different copper bars and solving the insulation problem. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 It is an exploded view of the installation structure of the three-phase copper busbar of the present invention;

[0020] Figure 2 is a side sectional view of a three-phase copper busbar of the present invention;

[0021] Figure 3 It is a schematic structural diagram of a three-phase copper busbar of the present invention;

[0022] Figure 4 is a front view of a three-phase copper busbar of the present invention;

[0023] Figure 5 It is a schematic structural diagram of the bending structure of the present invention in a horizontal state;

[0024] Figure 6 It is a structural schematic diagram of a three-phase copper busbar of the present invention;

[0025] Figure 7 It is a schematic structural diagram of the bending structure of the present invention in a vertical state.

[0026] Explanation of the reference numerals in the accompanying drawings in the specification: copper busbar-1; motor lap end-11; mounting hole-11-1; IGBT lap end-12; bending structure-12-1; mounting seat-2; sealing groove-21; cylinder penetration portion-3; channel-31; extension portion-4; sealing structure-5; bolt structure-6; through hole-7; through hole-8; isolation sleeve-9; insulating plate-10. DETAILED DESCRIPTION

[0027] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the drawings of the specification. Obviously, the described embodiments are part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary persons in the art without creative work should fall within the scope of protection of the present invention.

[0028] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0029] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0030] The present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0031] At the same time, in the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "upper, lower, left, right inside and outside" are based on the directions or positional relationships shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first, second or third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0032] In the present invention, unless otherwise clearly specified and limited, the terms "install, connect, connect" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection or an integral connection; it can also be a mechanical connection, an electrical connection or a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] Embodiment 1

[0034] The three-phase copper busbar seat is an important electrical component in the motor controller and motor of new energy vehicles. At present, more and more motors in new energy vehicles adopt oil cooling with higher cooling efficiency. When the motor controller and the oil-cooled motor are integrated, the three-phase copper busbar needs to be used to transmit energy. In order to avoid pollution, the three-phase copper busbar needs to be sealed and isolated, and the motor and the electronic control cavity are divided into two independent spaces. The three-phase copper busbar is set at the connection position between the three-phase copper busbar and the motor. In the existing three-phase copper busbar, the cylinder penetration position is mostly a flat arrangement structure, that is, the motor connection position of the three-phase copper busbar is a flat arrangement. When sealing the three-phase copper busbar, a sealing ring needs to be set for the opening circumference of the cylinder penetration position. Therefore, the required sealing ring is relatively long. In addition, insulating material needs to be set between the three-phase copper busbars, which further increases the volume of the three-phase copper busbar seat. In order to ensure the sealing performance, more bolt structures 6 are needed to complete the compression of the sealing ring, which brings great difficulties to efficient integration.

[0035] Reference below Figure 1 to Figure 7 A three-phase copper bar seat according to an embodiment of the present invention is described, which is used to install a three-phase copper bar. The three-phase copper bar includes three copper bars 1, namely copper bar L1, copper bar L2 and copper bar L3. L1, L2 and L3 are stacked. The three-phase copper bar seat includes a mounting seat 2, a cylinder portion 3, an extension portion 4 and a sealing structure 5. The three-phase copper bar seat uses insulating material. Three parallel channels 31 are opened inside the cylinder portion 3. Copper bar L1, copper bar L2 and copper bar L3 are respectively extended into and fixed in the three channels 31. The three channels 31 do not interfere with each other, so as to avoid contact between copper bar L1, copper bar L2 and copper bar L3, so as to achieve a certain insulation effect. The extension portion 4 is arranged at the top of the cylinder portion 3. In this embodiment, the extension portion 4 is arranged at the upper end of the cylinder portion 3. Three through holes are opened in the middle of the extension portion 4. One end of the copper bar L1, copper bar L2 and copper bar L3 is extended from the through hole. Extending out, in order to ensure the installation of the three-phase copper bar seat, in the horizontal direction, the edge of the extension part 4 protrudes from the edge of the outer wall of the cylinder part 3, and the mounting seat 2 is sleeved from bottom to top on the outer wall of the cylinder part 3, and the protruding edge of the extension part 4 is connected to the mounting seat 2 by bolts. In order to avoid contamination, a sealing structure 5 is arranged between the mounting seat 2 and the extension part 4. Specifically, the sealing structure 5 is a nearly rectangular or O-shaped elastic rubber ring to achieve radial sealing at the connection position between the cylinder part 3 and the mounting seat 2. In this embodiment, since the copper bars L1, L2 and L3 are arranged in parallel, compared with the traditional three-phase copper bars placed in parallel, the contour circumference of the end face of the three-phase copper bar mounting seat can be reduced, and the mounting seat 2 is fixed along the contour circumference of the cylinder part 3, the number of fixing bolts required is reduced, and the circumference of the sealing structure 5 is shortened, further reducing the space occupied by the three-phase copper bar seat.

[0036] It should be further explained that, since the mounting base 2 is connected to the extension portion 4 located at the top of the cylinder-penetrating portion 3, arc-shaped protrusions extending outward are arranged at two opposite diagonals of the extension portion 4, and bolt holes are opened on the arc-shaped protrusions. The connection between the mounting base 2 and the extension portion 4 can be achieved by inserting bolts into the bolt holes. The lower end of the copper busbar 1 extends into the channel of the cylinder-penetrating portion 3, and the upper end of the copper busbar 1 extends from the extension portion 4. When the mounting base 2 is fixed on the motor housing or the motor controller housing, the mounting base 2 can separate the lower and upper ends of the copper busbar 1 into two independent cavities of the motor and the motor controller.

[0037] In one embodiment, referring to Figure 3 The copper busbar 1 includes a motor lap terminal 11 and an IGBT lap terminal 12. To facilitate the installation of the three-phase copper busbar, in this embodiment, the motor lap terminal 11 of the copper busbar L1 is the motor end W phase, and the IGBT lap terminal 12 is the IGBT lap terminal W phase. The motor lap terminal 11 of the copper busbar L2 is the motor end V phase, and the IGBT lap terminal 12 is the IGBT lap terminal V phase. The motor lap terminal 11 of the copper busbar L3 is the motor end U phase, and the IGBT lap terminal 12 is the IGBT lap terminal U phase. The motor lap terminal 11 is connected to the motor, and the IGBT lap terminal 12 is connected to the IGBT. The IGBT is an insulated gate double The pole transistor is a three-terminal semiconductor switching device used to control the current and voltage in the circuit. The IGBT lap terminal 12 in the copper busbar 1 is connected to the IGBT, and the motor lap terminal 11 is connected to the motor. The effect of controlling the motor is achieved through the connection of the copper busbar 1. The motor lap terminal 11 extends in the vertical direction, and the three IGBT lap terminals 12 extend out of the extension part 4 and extend in different directions. It is only necessary to arrange the motor lap terminals 1 of the copper busbar 1 in parallel and stacked. The extension of the IGBT lap terminals 12 in different directions can limit the displacement of the copper busbar 1 to a certain extent, and the three IGBT lap terminals 12 can be dispersed for easy connection.

[0038] In one embodiment, in order to realize the connection and fixation between the copper busbar 1 and the three-phase copper busbar seat, refer to Figure 3 The three-phase copper busbar seat also includes a bolt structure 6, which has at least three bolt structures 6. The three bolt structures 6 transversely pass through the motor lap end 11 and the cylinder portion 3. The installation heights of the other three bolt structures 6 are different and do not contact each other. The connection positions of the three copper busbars 1 are separated from each other to solve the insulation problem during the connection process.

[0039] In one embodiment, in order to solve the isolation and insulation problem between the three copper bars 1 and the cylinder piercing part 3, refer to Figure 3 and 4The motor lap ends 11 of the three copper bars 1 have different lengths in the vertical direction. As a preferred embodiment, the lengths of the three motor lap ends 11 increase or decrease in sequence. As shown in the figure, the lengths of the motor end W phase, the motor end V phase and the motor end U phase are shortened in sequence to form an upper and lower stacking arrangement. It should be noted that when the other three copper bars 1 are stacked, the stacking order can be adjusted according to the output mode of the motor. Different numbers of mounting holes 11-1 are opened on the three motor lap ends 11. On each motor lap end 11, the aperture of the mounting hole 11-1 at the bottom is the smallest. Specifically, the length of the motor end W phase is the longest. Three mounting holes 11-1 are set on the motor end W phase. The apertures of the two mounting holes 11-1 with higher heights are larger than the apertures of the mounting holes 11-1 with the lowest height. The length of the motor end V phase is medium. Two mounting holes 11-1 are set on the motor end V phase. The mounting hole 11-1 has a larger aperture than the mounting hole 11-1 with a lower height. The length of the U-phase at the motor end is the shortest. The aperture of the mounting hole 11-1 at the U-phase at the motor end is the same as the aperture of the lowest mounting hole 11-1 at the W-phase at the motor end and the V-phase at the motor end. The bolt structure 6 passes through the mounting hole 11-1 with a smaller aperture to achieve the installation and fixation of the copper bus 1. Furthermore, when the bolt structure 6 passes through the mounting hole 11-1 on the U-phase at the motor end, since the bottom of the W-phase at the motor end and the V-phase at the motor end are also fixed by the bolt structure 6, the end of the bolt structure 6 extends into the mounting hole 11-1 with a larger aperture on the W-phase at the motor end and the V-phase at the motor end, thereby avoiding contact between the bolt structure 6 connected to the U-phase at the motor end and the W-phase at the motor end and the V-phase at the motor end, thereby solving the insulation problem during the connection process.

[0040] It should be noted that this embodiment does not limit the length of the W phase, the V phase and the U phase at the motor end. While ensuring that the lengths of the three are different, the lengths of the W phase, the V phase and the U phase at the motor end can all be maximum. At this time, the number and aperture of the mounting holes 11-1 are adaptively adjusted according to the respective lengths of the W phase, the V phase and the U phase at the motor end.

[0041] It should be noted that, refer to Figure 5 The interior of the through-cylinder portion 3 is divided into three areas by setting an insulating plate 10. When the three copper bars 1 are inserted into the through-cylinder portion 3, they can abut against the insulating plates 10 at different positions, further solving the insulation problem; further, referring to the figure, one side wall of the through-cylinder portion 3 is two connected near-triangular structures, which do not block the mounting holes 11-1 on the copper bars 1, thereby facilitating the installation of the bolt structure 6.

[0042] In one embodiment, referring to Figure 6The through-cylinder portion 3 is provided with three through holes 7 of different heights in the vertical direction. The positions of the three through holes 7 correspond to the positions of the mounting holes 11-1 on the three motor overlap ends 11. The bolt structure 6 extends through the through holes 7 and the mounting holes 11-1 to achieve the installation and fixation of the copper busbar 1. The aperture sizes of the other three through holes 7 are different. The aperture size of the through hole 7 with the lowest height in the vertical direction is the smallest. The aperture size of the through hole 7 with the smallest aperture is the same as that of the mounting hole 11-1. In this embodiment, the length of the W phase at the motor end is the longest. The mounting holes 11-1 provided on the W phase at the motor end are 1 corresponds to the aperture size of the through hole 7 with the lowest height on the through-cylinder part 3, the bolt structure 6 extends into the mounting hole 11-1 and the through-cylinder part 3 to realize the connection and fixation of the copper bar 1 and the through-cylinder part 3. In addition, the aperture size of the through hole 7 with a higher height is larger than the aperture size of the mounting hole 11-1 opened at the motor end V phase and the motor end U phase. The bolt structure 6 for installing the motor end V phase and the motor end U phase passes through the mounting holes 11-1 of the two and extends into the through hole 7 with a larger aperture to avoid contact with the through-cylinder part 3, thereby further solving the insulation problem in the connection process.

[0043] In one embodiment, referring to Figure 5 and 7 A bending structure 12-1 is provided at one end of each of the three IGBT lap ends 12. The bending structure 12-1 extends in a horizontal or vertical direction. A through hole 8 is provided in the middle of each of the three bending structures 12-1. The extending direction of the bending structure 12-1 can be adaptively adjusted according to actual usage. As a preferred embodiment, the three bending structures 12-1 have the same height, and the centers of the three through holes 8 are located on the same horizontal line, which is suitable for an integrated IGBT device.

[0044] In one embodiment, referring to Figure 6 Three isolation sleeves 9 are arranged on the upper part of the extension portion 4, and the outer walls of the three IGBT lap ends 12 extend into the three isolation sleeves 9 respectively, and each isolation sleeve 9 is connected to a channel 31 separately. The upper part of the copper busbar 1 is arranged in the isolation sleeve 9, and the lower part is inserted into the through hole 31 of the cylinder portion 3, so as to further realize the separation of the three copper busbars 1, ensure that the creepage distance between the IGBT lap ends 12 of the copper busbar 1 is at least reached, and solve the insulation problem between the copper busbars 1.

[0045] It should be noted that, refer to Figure 5 and 6 A plurality of long strip reinforcement structures are arranged around the isolation sleeve 9 at the upper part of the extension part 4, and the bottom of the isolation sleeve 9 is arranged in parallel. A nearly triangular reinforcement plate is arranged between the two isolation sleeves 9 located on the outer side and the extension part 4, thereby improving the structural strength of the connection between the extension part 4 and the isolation sleeve 9.

[0046] In one embodiment, referring to Figure 1A circle of sealing groove 21 is set on the bottom surface of the mounting seat 2 and the extension part 4. Specifically, the sealing groove 21 is set on the lower bottom surface of the mounting seat 2 and the upper bottom surface of the extension part 4. The notches of the sealing grooves 21 of the mounting seat 2 and the extension part 4 are connected. The sealing structure 5 is set in the sealing groove 21. The sealing structure 5 fills the sealing groove 21, further ensuring the sealing effect.

[0047] The scheme of the present invention provides a three-phase copper bar seat for a three-phase copper bar, and the lower part of the three-phase copper bar is installed in parallel in the cylinder portion 3, thereby reducing the contour circumference of the end face of the three-phase copper bar seat, and the mounting seat 2 is sleeved on the outer wall of the cylinder portion 3, thereby reducing the volume of the mounting seat 2, thereby reducing the number of bolts required to be used between the mounting seat 2 and the extension portion 4, and further reducing the volume of the three-phase copper bar seat. A sealing structure 5 is provided between the mounting seat 2 and the extension portion 4 to achieve separation of the motor lap end 11 and the IGBT lap end 12 on the copper bar 1, thereby preventing pollutants in the motor from contaminating the electronic parts in the motor controller.

[0048] Embodiment 2

[0049] Different from the above-mentioned embodiment, this embodiment provides a vehicle, which is equipped with the above-mentioned three-phase copper busbar seat, rationally designs the structure of the three-phase copper busbar and the relative positions of the three copper busbars, has a small volume and a short sealing circumference three-phase busbar seat, divides the motor controller and the oil-cooling motor into two independent cavities, avoids contamination of various electronic parts inside the motor controller, and improves the service life of the vehicle.

[0050] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may also include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A three-phase copper bar seat, used for installing a three-phase copper bar, the three-phase copper bar comprising three copper bars (1), characterized in that: The three-phase copper bar socket comprises a mounting seat (2), a cylinder-penetrating portion (3), an extension portion (4) and a sealing structure (5); the extension portion (4) is fixed to one end of the cylinder-penetrating portion (3); the mounting seat (2) is sleeved onto the cylinder-penetrating portion (3) and connected to the extension portion (4); and a sealing structure (5) is provided between the mounting seat (2) and the extension portion (4); Three channels (31) are provided inside the cylinder penetration portion (3), the three channels (31) are arranged in the same row, the three channels (31) do not interfere with each other, one end of the three copper bars (1) is inserted into and fixed in the three channels (31), and the other end of the three copper bars (1) extends out from the extension portion (4).

2. The three-phase copper busbar according to claim 1, characterized in that: The three copper bars (1) each comprise a motor lap end (11) and an IGBT lap end (12); the motor lap end (11) extends in a vertical direction; and the three IGBT lap ends (12) extend out of the extension portion (4) and in different directions.

3. The three-phase copper bar socket according to claim 2, characterized in that: The three-phase copper busbar seat also includes a bolt structure (6), and there are at least three bolt structures (6). The three bolt structures (6) respectively fix the three motor lap ends (11), and the three bolt structures (6) have different installation heights and do not contact each other.

4. The three-phase copper bar socket according to claim 3, characterized in that: The three motor lap ends (11) have different lengths in the vertical direction, and different numbers of mounting holes (11-1) are provided on the three motor lap ends (11). The bolt structure (6) extends into the mounting hole (11-1). The mounting holes (11-1) on the three motor lap ends (11) are located at corresponding positions, and on each motor lap end (11), the mounting hole (11-1) located at the bottom has a smaller hole diameter.

5. The three-phase copper busbar according to claim 4, characterized in that: A plurality of insulating plates (10) are arranged on the inner wall of the cylinder penetration portion (3) in a horizontal direction, and the insulating plates (10) are in contact with the bottom ends of the motor overlap ends (11) of different lengths in a vertical direction.

6. The three-phase copper bar socket according to claim 3, characterized in that: The cylinder penetration portion (3) is provided with three through holes (7) of different heights in the vertical direction, the bolt structure (6) extends into the through holes (7), and the diameter of the through hole (7) with the lowest height in the vertical direction is smaller than the diameters of the two through holes (7) with higher heights.

7. The three-phase copper bar socket according to claim 2, characterized in that: A bending structure (12-1) is provided at one end of each of the three IGBT lap ends (12), the bending structure (12-1) extends in a horizontal or vertical direction, and a through hole (8) is provided in the middle of each of the three bending structures (12-1).

8. The three-phase copper bar socket according to claim 2, characterized in that: Three isolation sleeves (9) are arranged on the upper part of the extension portion (4), the three IGBT lap ends (12) extend into the three isolation sleeves (9) respectively, and each isolation sleeve (9) is connected to one of the channels (31).

9. The three-phase copper busbar according to claim 1, characterized in that: A circle of sealing groove (21) is provided on the bottom surface of the mounting seat (2) and the extension portion (4); the notches of the sealing groove (21) of the mounting seat (2) and the extension portion (4) are connected; and the sealing structure (5) is provided in the sealing groove (21).

10. A vehicle, comprising the three-phase copper busbar according to any one of claims 1 to 9.

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